X64: Fixed test .status format, and made test.py forward arch to scons.

test/message/message.status

Index: test/message/message.status
diff --git a/test/message/message.status b/test/message/message.status
index d40151e8d4fcdf2bc7213c8b10bcbea6cbf7d32f..9cf5aeadd46b2f6c1f65359976286ea1ee9d4a4d 100644
--- a/test/message/message.status
+++ b/test/message/message.status
@@ -32,13 +32,13 @@ bugs: FAIL
 
 [ $arch == x64 ]
 
-simple-throw.js: FAIL
-try-catch-finally-throw-in-catch-and-finally.js: FAIL
-try-catch-finally-throw-in-catch.js: FAIL
-try-catch-finally-throw-in-finally.js: FAIL
-try-finally-throw-in-finally.js: FAIL
-try-finally-throw-in-try-and-finally.js: FAIL
-try-finally-throw-in-try.js: FAIL
-overwritten-builtins.js: FAIL
-regress-73.js: FAIL
-regress-75.js: FAIL
+simple-throw: FAIL
+try-catch-finally-throw-in-catch-and-finally: FAIL
+try-catch-finally-throw-in-catch: FAIL
+try-catch-finally-throw-in-finally: FAIL
+try-finally-throw-in-finally: FAIL
+try-finally-throw-in-try-and-finally: FAIL
+try-finally-throw-in-try: FAIL
+overwritten-builtins: FAIL
+regress-73: FAIL
+regress-75: FAIL